LEASES - Summary of supplemental balance sheet information (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Operating Leases:
Operating right-of-use assets	$ 183,398	$ 144,598
Lease Liabilities:
Current portion of operating lease liabilities	31,680	29,881
Long-term operating lease liabilities	159,414	119,315
Total operating lease liabilities	191,094	149,196
Finance Leases:
Property, plant and equipment, net	$ 13,696	$ 16,466
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	PROPERTY, PLANT AND EQUIPMENT, net	PROPERTY, PLANT AND EQUIPMENT, net
Lease Liabilities:
Notes payable and current portion of long-term debt	$ 2,065	$ 2,347
Long-term debt, net	11,995	14,120
Total financing lease liabilities	$ 14,060	$ 16,467
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Notes payable and current portion of long-term debt	Notes payable and current portion of long-term debt
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Long-Term Debt, Excluding Current Maturities	Long-Term Debt, Excluding Current Maturities
Accumulated depreciation	$ 4,972	$ 6,136